/*
 * Copyright 2004-2006 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package uk.co.foocode.sample.petclinic;

import java.util.Collection;
import java.util.Date;

import org.springframework.dao.DataAccessException;

import uk.co.foocode.sample.petclinic.util.PagedListResults;

/**
 * The high-level PetClinic business interface.
 * 
 * <p>
 * This is basically a data access object, as PetClinic doesn't have dedicated
 * business logic.
 * 
 * @author Ken Krebs
 * @author Juergen Hoeller
 */
public interface Clinic {

    /**
     * Retrieve all <code>Vet</code>s from the datastore.
     * 
     * @return a <code>Collection</code> of <code>Vet</code>s
     */
    Collection getVets() throws DataAccessException;

    /**
     * Retrieve all <code>PetType</code>s from the datastore.
     * 
     * @return a <code>Collection</code> of <code>PetType</code>s
     */
    Collection getPetTypes() throws DataAccessException;
    
    /**
     * Retrieve all <code>Specialities</code>s from the datastore.
     * 
     * @return a <code>Collection</code> of <code>Specialities</code>s
     */
    Collection getSpecialties() throws DataAccessException;

    /**
     * Retrieve <code>Owner</code>s from the datastore by last name,
     * returning all owners whose last name <i>starts</i> with the given name.
     * 
     * @param lastName
     *            Value to search for
     * @return a <code>Collection</code> of matching <code>Owner</code>s
     *         (or an empty <code>Collection</code> if none found)
     */
    Collection findOwners(String lastName) throws DataAccessException;
    /**
     * Retrieve <code>Visits</code>s from the datastore within the date range specified
     * 
     * @param startDate
     *            Start date for search
     * @param endDate
     *            End date for search
     * @return a <code>Collection</code> of matching <code>Visits</code>s
     *         (or an empty <code>Collection</code> if none found)
     */
    Collection findVisits(Date startDate, Date endDate) throws DataAccessException;
    
     PagedListResults findVisits(Date startDate, Date endDate, int rowOffset, int rowLimit) throws DataAccessException;

    /**
     * Retrieve an <code>Owner</code> from the datastore by id.
     * 
     * @param id
     *            the id to search for
     * @return the <code>Owner</code> if found
     * @throws org.springframework.dao.DataRetrievalFailureException
     *             if not found
     */
    Owner loadOwner(int id) throws DataAccessException;

    /**
     * Retrieve a <code>Pet</code> from the datastore by id.
     * 
     * @param id
     *            the id to search for
     * @return the <code>Pet</code> if found
     * @throws org.springframework.dao.DataRetrievalFailureException
     *             if not found
     */
    Pet loadPet(int id) throws DataAccessException;
    /**
     * Retrieve a <code>Visit</code> from the datastore by id.
     * 
     * @param id
     *            the id to search for
     * @return the <code>Visit</code> if found
     * @throws org.springframework.dao.DataRetrievalFailureException
     *             if not found
     */
    Visit loadVisit(int id) throws DataAccessException;

    /**
     * Retrieve all <code>Pet</code>s from the datastore.
     * 
     * @return a <code>Collection</code> of <code>Pet</code>s.
     */
    public Collection getPets() throws DataAccessException;

    /**
     * Save an <code>Owner</code> to the datastore, either inserting or
     * updating it.
     * 
     * @param owner
     *            the <code>Owner</code> to save
     * @see Entity#isNew
     */
    void storeOwner(Owner owner) throws DataAccessException;

    /**
     * Save a <code>Pet</code> to the datastore, either inserting or updating
     * it.
     * 
     * @param pet
     *            the <code>Pet</code> to save
     * @see Entity#isNew
     */
    void storePet(Pet pet) throws DataAccessException;
    
    /**
     * Save a <code>Vet</code> to the datastore, either inserting or updating
     * it.
     * 
     * @param vet
     *            the <code>Pet</code> to save
     * @see Entity#isNew
     */
    void storeVet(Vet vet) throws DataAccessException;

    /**
     * Save a <code>Visit</code> to the datastore, either inserting or
     * updating it.
     * 
     * @param visit
     *            the <code>Visit</code> to save
     * @see Entity#isNew
     */
    void storeVisit(Visit visit) throws DataAccessException;

    /**
     * Retrieve a <code>Vet</code> from the datastore by id.
     * 
     * @param id
     *            the id to search for
     * @return the <code>Vet</code> if found
     * @throws org.springframework.dao.DataRetrievalFailureException
     *             if not found
     */
	Vet loadVet(int id);

}
